Sökning: "rolling resistance coefficient"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden rolling resistance coefficient.

1. 1. Design and evaluation of a regenerativeshock absorber

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Julius Lundberg; [2021]
   Nyckelord :regenerative shock absorber; hydraulic electric; regenerative; shock absorber; product development;

   Sammanfattning : This thesis was made together with Syntronic, a leading design house specializing in advanced productand systems development. One of the major trends in vehicle industry today is the emergence of electricvehicles. LÄS MER

3. 2. SUSTAINABLE LUBRICATION FOR FUTURE TRANSMISSIONS : Micropitting performance of Glycerol-based lubricants

   Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Zapata Tamayo Juan Guillermo; [2021]
   Nyckelord :micropitting; mild sliding wear; surface coating; diamond-like carbon DLC; glycerol-based lubrication; green lubricant; rolling contact fatigue; rolling-sliding;

   Sammanfattning : Achieving sustainable lubrication by using environmentally friendly formulated lubricants has became an essential component of the transition process from fossil-powered vehicles to electrified transportation. Mixtures, or aqueous solutions of molecules such as polyhydroxy alcohols, and glycols usually known as green lubricants make it possible to achieve low friction coefficients under different lubrication conditions, which constitutes a potential alternative to improve the tribological performance of moving parts in automotive systems, at the same time that the environmental requirements are satisfied. LÄS MER

4. 3. Torque-Based Load Estimation for Passenger Vehicles

   Master-uppsats, Linköpings universitet/Reglerteknik

   Författare :Tobias Nyberg; [2021]
   Nyckelord :Load Estimation; RLS; Recursive least squares; torque; torque-based; mass estimation; mass; passenger vehicle; estimation algorithm; load estimation algorithm; forgetting factor; RLS with forgetting factor;

   Sammanfattning : An accurate estimate of the mass of a passenger vehicle is important for several safety systems and environmental aspects. In this thesis, an algorithm for estimating the mass of a passenger vehicle using the recursive least squares methodis presented. LÄS MER

5. 4. Testuppställning för uppmätning av rullmotstånd

   Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Martin Erwe; [2018]
   Nyckelord :Tires rolling resistance; chassis dynamometer; torque wheel; rolling resistance coefficient; Däcks rullmotstånd; chassidynamometer; momentnav; rullmotståndskoefficient;

   Sammanfattning : När en lastbil färdas på väg utsätts den för ett antal krafter. Däckens rullmotstånd utgör ungefär 36 till 60 % av färdmotståndet. Att kunna validera rullmotståndet vid egen testning är värdefullt för en fordonstillverkare som Scania. LÄS MER

7. 5. Experimental investigation of rolling losses and optimal camber angle

   Kandidat-uppsats, KTH/Maskinkonstruktion (Inst.)

   Författare :Bethuel Karanja; Elin Skoog; [2015]
   Nyckelord :;

   Sammanfattning : This Bachelor thesis project is an experimental investigation of the effect of camber and toe angles on rolling resistance. The experiments are done on Sleipner, a Prototype car made by KTH students, which takes part in the Shell Eco Marathon competition in Rotterdam. LÄS MER